TY  - JOUR 
T1  - Seasonal study of concentration of heavy metals in waters from lower São Francisco River basin, Brazil
JO  - Brazilian Journal of Biology
A1  - Souza, A. M.
A1  - Salviano, A. M.
A1  - Melo, J. F. B.
A1  - Felix, W. P.
A1  - Belém, C. S.
A1  - Ramos, P. N.
SN  - 1519-6984
UL  - 10.1590/1519-6984.05215
VL  - 76 
Y1  - 2016
PB  - Brasil 
ER  -